1. WLAN standards, working frequency bands, and theoretical rates.
2. OFDM and OFDMA, working frequency band, spatial stream.
3. Three frame types: management frames, control frames, data frames, CAPWAP messages and ports.
4. Inter-frame spacing, beamforming, channel bonding, BSS Color.
5. WLAN security, AC reliability, HSB.
6. Key points: four architectures, CAPWAP tunnel establishment process, and roaming.
7. STA access process, two types of link authentication.
8. Direct-connected networking, side-mounted networking, direct forwarding, and tunnel forwarding.
